REFUSES TO GIVE UP. KELLY BRENNAN WITH THE STORY ONLY ON 4. Reporter: NOAH WEBBER WILL BOUNCE FROM ONE THING TO THE NEXT. POOL IN THE BACKYARD. HUGE. Reporter: AN ACTIVE 8-YEAR-OLD BOY, HE DOESN'T LIKE A SIT STILL. MAYBE YOU'RE A DRAGON. SHE'S A GIRL. Reporter: FOR HIS ENERGETIC AS HE IS YOU WOULDN'T KNOW HE WAS BORN WITH A RARE CONGENITAL HEART DIFFICUEFECT. HE'S HAD FOUR OPEN HEART SURGERIES, ALL BEFORE HIS 8th BIRTHDAY. THAT'S WHERE SHE COMES? IS SHE YOUR GIRL FRIEND? YEAH. SHE'S 16. A HIGH SCHOOL STUDENT EIGHT YEARS HIS SENIOR. ARIEL NELSON TAKES DANCE LESSONS WITH NOAH'S OLDER SISTER. THAT'S HOW SHE CAME TO MEET NOAH WHO FELL IN LOVE WITH HER AT FIRST SITE. SHE WAS HIS ONLY REQUEST AFTER MAJOR HEART SURGERY IN NOVEMBER. YOUR HAIR WAS IN MY FACE. Reporter: NOAH TAKES HIS ROLE AS BOYFRIEND SERIOUSLY. YOU GOT ME THIS. A REAL ONE. $10 OR $50, I DON'T KNOW. Reporter: HE EVEN SURPRISED HER DURING HER DANCE RECITE TALL. AT THE END OF THE WAITING FOR THE CURTAINS TO CLOSE. I WAS LIKE, IS THERE A MALFUMPGS? Reporter: THIS WASN'T A MALFUNCTION. THIS WAS NOAH'S DOING. IN A FEW MONTHS SHE IS HOPING HER HIGH SCHOOL WILL LET HER TAKE NOAH TO THE HOMECOMING DAPS. EVERYONE DESERVES TO GET A CHANCE TO GO TO THEIR HOMECOMING AND DRESS UP FOR SCHOOL. WE DON'T KNOW WHAT HIS CONDITION IS GOING TO BE IN THE FUTURE SO WE SAID, HEY, I'M GOING TO BE A JUNIOR THIS YEAR. WHY NOT TAKE HIM. HE'S HAD A LOT OF MENTAL HEALTH ISSUES THROUGH THE YEARS TO WHERE HE WAS VERY AGGRESSIVE AND ANGRY. SHE HAS BROUGHT OUT A VERY LOING, SPECIAL LITTLE BOY THAT WAS INSIDE OF HIM. SHE IS WONDERFUL. Reporter: FOR A KID WHO DOESN'T LIKE TO DANCE, WITH HER,